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/*
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 * Copyright 2011 GRNET S.A. All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or
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 * without modification, are permitted provided that the following
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 * conditions are met:
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 *
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 *   1. Redistributions of source code must retain the above
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 *      copyright notice, this list of conditions and the following
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 *      disclaimer.
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 *
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 *   2. Redistributions in binary form must reproduce the above
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 *      copyright notice, this list of conditions and the following
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 *      disclaimer in the documentation and/or other materials
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 *      provided with the distribution.
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 *
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 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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 * POSSIBILITY OF SUCH DAMAGE.
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 *
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 * The views and conclusions contained in the software and
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 * documentation are those of the authors and should not be
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 * interpreted as representing official policies, either expressed
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 * or implied, of GRNET S.A.
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 */
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package gr.grnet.aquarium.store


    		
  

  

  

    
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import gr.grnet.aquarium.user.UserState


    		
  

  

  

    
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import com.ckkloverdos.maybe.Maybe


    		
  

  

  

    
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/**


    		
  

  

  

    
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 * A store for user state.


    		
  

  

  

    
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 *


    		
  

  

  

    
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 * @author Christos KK Loverdos <loverdos@gmail.com>


    		
  

  

  

    
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 */


    		
  

  

  

    
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trait UserStore {


    		
  

  

  

    
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  def storeUserState(userState: UserState): Maybe[RecordID]


    		
  

  

  

    
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  def findUserStateById(id: String): Maybe[UserState]


    		
  

  

  

    
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  def findUserStateByUserId(userID: String, atMost: Int = 10): List[UserState]


    		
  

  

  

    
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}